//
//  UIColor+JZNExtension.m
//  taishan
//
//  Created by mac on 2019/4/15.
//  Copyright © 2019年 jznrj. All rights reserved.
//

#import "UIColor+JZNExtension.h"
#define DEFAULT_VOID_COLOR [UIColor whiteColor]
@implementation UIColor (JZNExtension)
+ (UIColor *) colorWithHexString:(NSString *)stringToConvert
{
    NSString *cString = [[stringToConvert stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]] uppercaseString];
    
    // String should be 6 or 8 characters
    if ([cString length] < 6)
        return DEFAULT_VOID_COLOR;
    
    // strip 0X if it appears
    if ([cString hasPrefix:@"0X"]) cString = [cString substringFromIndex:2];
    if ([cString hasPrefix:@"＃"]) cString = [cString substringFromIndex:1];
    
    if ([cString length] != 6)
        return DEFAULT_VOID_COLOR;
    
    // Separate into r, g, b substrings
    NSRange range;
    range.location = 0;
    range.length = 2;
    NSString *rString = [cString substringWithRange:range];
    
    range.location = 2;
    NSString *gString = [cString substringWithRange:range];
    
    range.location = 4;
    NSString *bString = [cString substringWithRange:range];
    
    // Scan values
    unsigned int r, g, b;
    [[NSScanner scannerWithString:rString] scanHexInt:&r];
    [[NSScanner scannerWithString:gString] scanHexInt:&g];
    [[NSScanner scannerWithString:bString] scanHexInt:&b];
    
    return [UIColor colorWithRed:((float) r / 255.0f)
                           green:((float) g / 255.0f)
                            blue:((float) b / 255.0f)
                           alpha:1.0f];
}

+ (id) colorWithHex:(unsigned int)hex
{
    return [UIColor colorWithHex:hex alpha:1];
}

+ (id) colorWithHex:(unsigned int)hex alpha:(CGFloat)alpha
{
    return [UIColor colorWithRed:((float)((hex & 0xFF0000) >> 16)) / 255.0
                           green:((float)((hex & 0xFF00) >> 8)) / 255.0
                            blue:((float)(hex & 0xFF)) / 255.0
                           alpha:alpha];
}

+ (UIColor*) randomColor
{
    int r = arc4random() % 255;
    int g = arc4random() % 255;
    int b = arc4random() % 255;
    return [UIColor colorWithRed:r/255.0 green:g/255.0 blue:b/255.0 alpha:1];
}

@end
